About 600 survey respondents answered questions on a scale of one (strongly disagree) to five (strongly agree). The average response to the statement “I try not to ask for accommodation” was 4.23, the study found; “I try to get more done at work” drew an average of 4.25.

Most pregnant women in the United States go to work, a fairly new trend in the country’s family landscape. Only 44 percent of women expecting their first child in the early sixties held a job, according to Census Bureau data. That share rose to 67 percent by the late eighties, where it remains today…